Why? 😒

I see on here everyday when women are 18-25w pregnant, who just found of the sex of their baby, asking "I'm not too sure it's a 'girl'", with a pic of the scan.  Really? If the US tech says it's a boy/girl, especially being around 18w-25w pregnant, the chances of them being wrong is slim to none. You really think women on here are going to know any more than a professional?Â